INNOVATION: This Facebook robot walks on power lines to install fiber-optic cable

Facebook has developed an aerial fiber deployment solution that uses a robot to safely deploy a specialised fiber-optic cable on medium-voltage (MV) power lines that can dramatically lower the cost of deploying fiber by utilising electrical infrastructure.
Each robot will be capable of installing over a kilometre of fiber and passing the dozens of intervening obstacles autonomously in approximately an hour and a half.
To account for the human interaction steps such as setup, loading and unloading the robot, installing transitions, etc., Facebook estimates an overall build speed of 1.5 km to 2 km per robot per day on average.
"We expect the total cost, including labour, depreciation, and materials, to be between $2 and $3 per metre in developing countries," Facebook said in a statement on Monday.
The system, which utilises the electrical grid to build out internet infrastructure, will be cheaper than the existing methods of laying internet cables, particularly in developing countries.

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